On Thu, Jun 16, 2011 at 12:24 AM, Tom Lane <t...@sss.pgh.pa.us> wrote: > Simon Riggs <si...@2ndquadrant.com> writes: >> On Wed, Jun 15, 2011 at 8:05 PM, Tom Lane <t...@sss.pgh.pa.us> wrote: >>> Simon Riggs <si...@2ndquadrant.com> writes: >>>> So a function that is both STRICT and SET RETURNING will return rows. > >>> Really? The case behaves as expected for me. > >> Seems that's the wrong question. Let me return to why I raised this: > >> Why does evaluate_function() specifically avoid returning NULL for a >> set returning function? > > Because replacing the SRF call with a constant NULL would produce the > wrong result, ie, a single row containing NULL, not zero rows.
OK, thanks. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
